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Design, synthesis, and anticancer activity of imidazo[2,1-b]oxazole-based RAF kinase inhibitors.

Abstract：

:In the present work, a novel series of B-RAF kinase inhibitors having imidazo[2,1-b]oxazole scaffold was designed and synthesized based on the structures of the well-known B-RAF inhibitors. The twenty two final compounds were tested over A375 and SKMEL28 cell lines to determine the primary cytotoxic activity of these compounds, and their activities were compared with that of sorafenib as a standard. Compounds 11c, 11e, 11o, 11q, 11r, and 11u exhibited higher cellular activity compared to sorafenib with IC50 values of 7.25, 8.03, 9.81, 8.47, 4.70, and 9.04 µM, respectively and 10.38 µM for sorafenib. In addition, the target compounds were screened for their anticancer activity by the NCI-60 cell line assay. Compounds 11v and 11u were the most active compounds with percent inhibition reached 95.99% for 11v and 87.03% for 11u over K562 cell line at 10 µM concentration. Compound 11v was selected for 5-dose test mode. Furthermore, the kinase inhibitory activities of 11a, 11c, 11e, 11i, 11o, 11q, 11r, 11u, and 11v were determined against wild-type B-RAF, V600E-B-RAF, and RAF1. Compound 11o was the most potent against V600E-B-RAF with IC50 34 nM followed by 11q and 11u with IC50 92 and 93 nM, respectively.

journal_name

Bioorg Chem

journal_title

Bioorganic chemistry

authors

Abdel-Maksoud MS,Ammar UM,El-Gamal MI,Gamal El-Din MM,Mersal KI,Ali EMH,Yoo KH,Lee KT,Oh CH

doi

10.1016/j.bioorg.2019.103349

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

103349

eissn

0045-2068

issn

1090-2120

pii

S0045-2068(19)30815-6

journal_volume

93

pub_type

杂志文章

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